移动视口问题间歇性

Question

很抱歉下面的混乱，但我现在花了太长时间试图自己解决这个问题，所以是时候退缩并寻求帮助了！

用于解释问题的屏幕截图：

http://crazy-pixels.co.uk/test/img/1.PNGhttp://crazy-pixels.co.uk/test/img/2.PNG

基本上，有时网页在移动设备上运行良好，有时网页中的所有内容都在右侧，因此您只能看到其中的一部分，而无需水平滚动。 如果您刷新页面 4-5 次，它通常会自行回退到移动视图中。

网络链接 http://crazy-pixels.co.uk/test/以防问题不在下面的 CSS 中，而在于文本动画的 JS。

谢谢

/* Google fonts & font family
==================================================*/
@import url(font-awesome.min.css);
@import url(https://fonts.googleapis.com/css?family=Muli);
@import url(https://fonts.googleapis.com/css?family=Poppins:400,500,600,700);
/* General
==================================================*/
html,
body {
    height: 100%;
    font-family: 'Poppins', sans-serif;
    line-height: 1.8;
    color: #999
}
.no-padding {
    padding-left: 0;
    padding-right: 0;
}
.no-padding [class^="col-"] {
    padding-left: 0;
    padding-right: 0;
}
.main-container {
    padding: 100px 0;
}
.center {
    text-align: center;
}
a {
    -webkit-transition: all .3s;
    transition: all .3s
}
.uppercase {
    text-transform: uppercase;
}
.h-30 {
    height: 30px
}
.h-10 {
    height: 10px
}
.color {
    color: #02FA79;
    font-size: 11px;
}

/* typography
==================================================*/
h1 {
    color: #393939;
    font-size: 60px;
    text-transform: uppercase;
}
h3 {
    color: #393939;
}
h5 {
    color: #02FA79;
}

/* preloader
==================================================*/
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #f5f5f5;
    /* change if the mask should be a color other than white */
    z-index: 1000;
    /* makes sure it stays on top */
}
.pre-container {
    position: absolute;
    left: 50%;
    top: 50%;
    bottom: auto;
    right: auto;
    -webkit-transform: translateX(-50%) translateY(-50%);
    transform: translateX(-50%) translateY(-50%);
    text-align: center;
}
.spinner {
    width: 40px;
    height: 40px;
    position: relative;
    margin: 100px auto;
}
.double-bounce1,
.double-bounce2 {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #02FA79;
    opacity: 0.6;
    position: absolute;
    top: 0;
    left: 0;
    -webkit-animation: bounce 2.0s infinite ease-in-out;
    animation: bounce 2.0s infinite ease-in-out;
}
.double-bounce2 {
    -webkit-animation-delay: -1.0s;
    animation-delay: -1.0s;
}
@-webkit-keyframes bounce {
    0%,
    100% {
        -webkit-transform: scale(0.0)
    }
    50% {
        -webkit-transform: scale(1.0)
    }
}
@keyframes bounce {
    0%,
    100% {
        transform: scale(0.0);
        -webkit-transform: scale(0.0);
    }
    50% {
        transform: scale(1.0);
        -webkit-transform: scale(1.0);
    }
}


/* box-intro
==================================================*/
.box-intro {
    text-align: center;
    display: table;
    height: 100vh;
    width: 100%;
}
.box-intro .table-cell {
    display: table-cell;
    vertical-align: middle;
}
.box-intro em {
    font-style: normal;
    text-transform: uppercase
}
b i:last-child {
    color: #02FA79 !important;
}
.box-intro h5 {
    letter-spacing: 4px;
    text-transform: uppercase;
    color: #999;
    line-height: 1.7
}

/* mouse effect */
.mouse {
    position: absolute;
    width: 22px;
    height: 42px;
    bottom: 40px;
    left: 50%;
    margin-left: -12px;
    border-radius: 15px;
    border: 2px solid #888;
    -webkit-animation: intro 1s;
    animation: intro 1s;
}
.scroll {
    display: block;
    width: 3px;
    height: 3px;
    margin: 6px auto;
    border-radius: 4px;
    background: #888;
    -webkit-animation: finger 2s infinite;
    animation: finger 2s infinite;
}
@-webkit-keyframes intro {
    0% {
        opacity: 0;
        -webkit-transform: translateY(40px);
        transform: translateY(40px);
    }
    100% {
        opacity: 1;
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
}
@keyframes intro {
    0% {
        opacity: 0;
        -webkit-transform: translateY(40px);
        transform: translateY(40px);
    }
    100% {
        opacity: 1;
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
}
@-webkit-keyframes finger {
    0% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        -webkit-transform: translateY(20px);
        transform: translateY(20px);
    }
}
@keyframes finger {
    0% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        -webkit-transform: translateY(20px);
        transform: translateY(20px);
    }
}

/* text rotate */
.box-headline {
    font-size: 130px;
    line-height: 1.0;
}
.box-words-wrapper {
    display: inline-block;
    position: relative;
}
.box-words-wrapper b {
    display: inline-block;
    position: absolute;
    white-space: nowrap;
    left: 0;
    top: 0;
}
.box-words-wrapper b.is-visible {
    position: relative;
}
.no-js .box-words-wrapper b {
    opacity: 0;
}
.no-js .box-words-wrapper b.is-visible {
    opacity: 1;
}
.box-headline.rotate-2 .box-words-wrapper {
    -webkit-perspective: 300px;
    perspective: 300px;
}
.box-headline.rotate-2 i,
.box-headline.rotate-2 em {
    display: inline-block;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}
.box-headline.rotate-2 b {
    opacity: 0;
}
.box-headline.rotate-2 i {
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
    -webkit-transform: translateZ(-20px) rotateX(90deg);
    transform: translateZ(-20px) rotateX(90deg);
    opacity: 0;
}
.is-visible .box-headline.rotate-2 i {
    opacity: 1;
}
.box-headline.rotate-2 i.in {
    -webkit-animation: box-rotate-2-in 0.4s forwards;
    animation: box-rotate-2-in 0.4s forwards;
}
.box-headline.rotate-2 i.out {
    -webkit-animation: box-rotate-2-out 0.4s forwards;
    animation: box-rotate-2-out 0.4s forwards;
}
.box-headline.rotate-2 em {
    -webkit-transform: translateZ(20px);
    transform: translateZ(20px);
}
.no-csstransitions .box-headline.rotate-2 i {
    -webkit-transform: rotateX(0deg);
    transform: rotateX(0deg);
    opacity: 0;
}
.no-csstransitions .box-headline.rotate-2 i em {
    -webkit-transform: scale(1);
    transform: scale(1);
}
.no-csstransitions .box-headline.rotate-2 .is-visible i {
    opacity: 1;
}
@-webkit-keyframes box-rotate-2-in {
    0% {
        opacity: 0;
        -webkit-transform: translateZ(-20px) rotateX(90deg);
    }
    60% {
        opacity: 1;
        -webkit-transform: translateZ(-20px) rotateX(-10deg);
    }
    100% {
        opacity: 1;
        -webkit-transform: translateZ(-20px) rotateX(0deg);
    }
}
@keyframes box-rotate-2-in {
    0% {
        opacity: 0;
        -webkit-transform: translateZ(-20px) rotateX(90deg);
        transform: translateZ(-20px) rotateX(90deg);
    }
    60% {
        opacity: 1;
        -webkit-transform: translateZ(-20px) rotateX(-10deg);
        transform: translateZ(-20px) rotateX(-10deg);
    }
    100% {
        opacity: 1;
        -webkit-transform: translateZ(-20px) rotateX(0deg);
        transform: translateZ(-20px) rotateX(0deg);
    }
}
@-webkit-keyframes box-rotate-2-out {
    0% {
        opacity: 1;
        -webkit-transform: translateZ(-20px) rotateX(0);
    }
    60% {
        opacity: 0;
        -webkit-transform: translateZ(-20px) rotateX(-100deg);
    }
    100% {
        opacity: 0;
        -webkit-transform: translateZ(-20px) rotateX(-90deg);
    }
}
@keyframes box-rotate-2-out {
    0% {
        opacity: 1;
        -webkit-transform: translateZ(-20px) rotateX(0);
        transform: translateZ(-20px) rotateX(0);
    }
    60% {
        opacity: 0;
        -webkit-transform: translateZ(-20px) rotateX(-100deg);
        transform: translateZ(-20px) rotateX(-100deg);
    }
    100% {
        opacity: 0;
        -webkit-transform: translateZ(-20px) rotateX(-90deg);
        transform: translateZ(-20px) rotateX(-90deg);
    }
}


/* footer
==================================================*/
footer {
    padding: 30px 0;
    text-align: center;
    background: #f5f5f5
}
.copyright {
    color: #ccc;
    margin-bottom: 0;
}
footer img {
    margin: 0 auto;
}

/* backto top
==================================================*/
.cd-top {
    display: inline-block;
    height: 40px;
    width: 40px;
    position: fixed;
    bottom: 20px;
    line-height: 40px;
    font-size: 20px;
    right: 10px;
    text-align: center;
    color: #fff;
    background: #02FA79;
    visibility: hidden;
    opacity: 0;
    -webkit-transition: opacity .3s 0s, visibility 0s .3s;
    transition: opacity .3s 0s, visibility 0s .3s;
}
.cd-top.cd-is-visible,
.cd-top.cd-fade-out,
.no-touch .cd-top:hover {
    -webkit-transition: opacity .3s 0s, visibility 0s 0s;
    transition: opacity .3s 0s, visibility 0s 0s;
}
.cd-top.cd-is-visible {
    /* the button becomes visible */
    visibility: visible;
    opacity: 1;
}
.cd-top.cd-fade-out {
    opacity: .5;
}
.no-touch .cd-top:hover,
.no-touch .cd-top:focus {
    background-color: #02FA79;
    opacity: 1;
    color: #fff;
}

/* About page
==================================================*/
.top-bar {
    color: #333;
    padding: 150px 0 150px;
    background: -webkit-linear-gradient( rgba(255, 255, 255, .8), rgba(255, 255, 255, .8)), url(../img/01.jpg);
    background: linear-gradient( rgba(255, 255, 255, .8), rgba(255, 255, 255, .8)), url(../img/01.jpg);
    background-size: cover;
    background-attachment: fixed;
    background-position: center center;
    text-align: center;
}
.top-bar h1 {
    font-size: 60px;
    text-transform: uppercase;
    font-weight: 700;
    color: #999;
    line-height: 50px;
}
.top-bar p {
    font-size: 15px;
    text-transform: uppercase;
    font-weight: 500;
    color: #777;
}
.top-bar p a {
    color: #777;
}
.top-bar p a:hover,
.top-bar p a:focus {
    color: #555;
    text-decoration: none;
}
.social-ul {
    list-style: none;
    display: inline-block;
    padding-left: 0;
}
.social-ul li {
    margin: 0 10px;
    float: left;
}
.social-ul li a {
    font-size: 25px;
    color: #555;
    -webkit-transition: all .3s;
    transition: all .3s;
}
.social-ul li a:hover {
    color: #888;
}

/* Services page
==================================================*/
.size-50 {
    font-size: 50px;
}
.service-box {
    margin-bottom: 30px;
}
.service-box h3 {
    margin-top: 0;
}

/* contact page
==================================================*/
.details-text i {
    margin-right: 10px;
}
.textarea-contact {
    height: 200px;
    width: 100%;
    border: solid 1px rgba(0, 0, 0, .1);
    position: relative;
}
.textarea-contact textarea {
    height: 100%;
    width: 100%;
    border: 0;
    padding: 20px;
    background-color: transparent;
    float: left;
    z-index: 2;
    font-size: 14px;
    color: #9a9a9a;
    resize: none;
}
.textarea-contact > span {
    position: absolute;
    top: 20px;
    left: 20px;
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
    font-size: 12px;
    text-transform: uppercase;
    color: #cdcdcd;
    -webkit-transition: all .2s ease-in-out;
    transition: all .2s ease-in-out;
    z-index: 1;
}
.input-contact {
    height: 40px;
    width: 100%;
    border: solid 1px rgba(0, 0, 0, .1);
    position: relative;
    margin-bottom: 30px;
}
.input-contact input[type="text"] {
    height: 100%;
    width: 100%;
    border: 0;
    padding: 0 20px;
    float: left;
    position: relative;
    background-color: transparent;
    z-index: 2;
    font-size: 14px;
    color: #9a9a9a;
}
.input-contact > span {
    position: absolute;
    top: 50%;
    left: 20px;
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
    font-size: 12px;
    text-transform: uppercase;
    color: #cdcdcd;
    -webkit-transition: all .2s ease-in-out;
    transition: all .2s ease-in-out;
    z-index: 1;
}
.input-contact > span.active,
.textarea-contact > span.active {
    color: #02FA79;
    font-size: 10px;
    top: 0px;
    left: 5px;
    background-color: #fff;
    padding: 5px
}
input:focus,
textarea:focus {
    outline: none;
}
.contact-info {
    margin-top: 20px;
}
.contact-info i {
    height: 30px;
    width: 30px;
    display: inline-block;
    background: #02FA79;
    text-align: center;
    line-height: 33px;
    margin-right: 10px;
    color: #fff;
    font-size: 21px;
}
.contact-info p {
    display: inline-block;
    margin-right: 20px;
}
.btn-box {
    background: #02FA79;
    padding: 10px 50px;
    border-radius: 0;
    color: #fff;
    margin-top: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 500;
}
.btn-box:hover,
.btn-box:focus {
    background: #F5B700;
    color: #fff;
}

/* single project page
==================================================*/
.cat-ul {
    padding-left: 0;
    list-style: none
}
.cat-ul li i {
    margin-right: 10px;
    color: #02FA79;
}

/* Responsive media queries
==================================================*/
@media (max-width: 991px) {
    .portfolio .categories-grid span {
        margin-bottom: 0;
        text-align: center;
        width: 100%;
    }
    .portfolio .categories-grid .categories ul li {
        text-align: center;
    }
    .portfolio .categories-grid .categories ul li a {
        margin-left: 0;
    }
    .col-md-6 h3 {
        margin-top: 30px;
    }
}
@media only screen and (max-width: 670px) {
    .box-headline {
        font-size: 100px;
    }
    .box-intro h5 {
        font-size: 12px;
    }
    .box-primary-nav a {
        padding: 5px 1em;
        font-size: 14px;
    }
    .box-primary-nav {
        padding: 80px 0 0;
    }
    .box-primary-nav .box-social a {
        font-size: 23px;
    }
    .top-bar h1 {
        font-size: 40px;
        line-height: 30px;
    }
    .portfolio .categories-grid .categories ul li {
        float: none;
    }
}
@media only screen and (max-width: 520px) {
    .box-headline {
        font-size: 80px;
    }
    .box-intro h5 {
        font-size: 12px;
    }
    .main-container {
        padding: 50px 0;
    }
}
@media only screen and (max-width: 420px) {
    .box-headline {
        font-size: 50px;
    }
    .box-intro h5 {
        font-size: 12px;
    }
    .top-bar h1 {
        font-size: 30px;
        line-height: 30px;
    }

}
    <meta name="viewport" content="width=device-width, initial-scale = 1.0, maximum-scale=1.0, user-scalable=no">

    <section class="box-intro">
         <div class="table-cell">
                    <h1 class="box-headline letters rotate-2">
                        <span class="box-words-wrapper">
                            <b class="is-visible">design.</b>
                            <b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;coding.</b>
                            <b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;graphics.</b>
                              <b>imagination.</b>
                     </span>
                    </h1>
                   <h5>The perfect combination to your websites success </h5>
                 </div>
                </div>
            </section>

Answer 1

显示：表似乎导致了问题。更改为显示块，您将能够控制元素的宽度。

更新：.box-words-wrapper导致了这个问题。下面添加了 Css 规则。

.box-intro {
    text-align: center;
    display: block;
    height: 100vh;
    width: 100%;
}
.box-intro .table-cell {
    display: block;
    vertical-align: middle;
}
.box-words-wrapper { 
    display: inline-block; 
    position: relative; 
    width: 100%!important; 
}