CSS 不适用

我正在为prestashop的一个模块编辑css，但我设置的所有更改都不会出现在我的网站上。我试图删除CSS样式表，以确保我使用的是正确的CSS，所有的属性都不见了，所以我试图逐一注释所有的字符串以找出问题，但当我上传它时，属性就在那里。

站点：backlabel.com查看页脚上的新闻稿块，正是在我试图删除position:absolute的<button>

CSS样式表

/* Block newsletter */
#columns #newsletter_block_left .form-group {
margin-bottom: 0;
}
#columns #newsletter_block_left .form-group .form-control {
max-width: 222px;
display: inline-block;
margin-right: 6px;
}
@media (min-width: 768px) and (max-width: 1199px) {
#columns #newsletter_block_left .form-group .form-control {
margin-bottom: 10px;
margin-right: 0;
}
}
#columns #newsletter_block_left .success_inline, #columns      #newsletter_block_left .warning_inline {
text-align: left;
padding: 1px 0 0 0;
margin-bottom: -19px;
}
#columns #newsletter_block_left .success_inline {
color: #418B19;
}
#columns #newsletter_block_left .warning_inline {
color: #f13340;
}
/* Block newsletter footer */ 
#footer #newsletter_block_left {
-webkit-transition: all 0.5s ease-in-out 0s;
transition: all 0.5s ease-in-out 0s;
}
#footer #newsletter_block_left form {
position: relative;
margin-top: 35px;
}
#footer #newsletter_block_left .form-group {
margin-bottom: 0;
margin-top: 20px;
}
#footer #newsletter_block_left .form-group .form-control {
height: 40px;
line-height: 30px;
width: 100%;
padding: 5px 40px 5px 15px;
display: inline-block;
background-color: transparent;
border: 1px solid #adadad;
}
#footer #newsletter_block_left .form-group .button-small {
color: #999999;
font-size: 17px;
border: 0;
background: transparent;
/* HERE IS WHERE I REMOVED THE POSITION:ABSOLUTE */
right: 0px;
top: 0px;
padding: 8px 10px;
}
.rtl #footer #newsletter_block_left .form-group .button-small {
left: 0px;
right: auto;
}
#footer #newsletter_block_left .form-group .button-small .icon {
position: relative;
top: -1px;
}
#footer #newsletter_block_left .form-group .button-small:hover {
color: #fff;
}
#footer #newsletter_block_left .warning_inline {
display: block;
color: #f13340;
font-size: 13px;
line-height: 26px;
clear: both;
}
@media (min-width: 1200px) {
#footer #newsletter_block_left .warning_inline {
display: inline-block;
position: relative;
top: -35px;
margin-bottom: -35px;
left: 15px;
clear: none;
}
}
#footer #newsletter_block_left.active {
right: 0;
}
#footer #newsletter_block_left .form-group.form-error input, #footer  
#newsletter_block_left .form-group.form-error textarea {
background: none;
background-color: #fff1f2;
}