для всех мобильных телефонов?
.refresh{
background: #8c6ff3;
box-shadow: none;
height: 100px;
text-indent: 100%;
white-space: nowrap;
overflow: hidden;
cursor: pointer;
font-size: 0;
transition: background-color 1s;
}
a.button::after{
background: url('/img/arrow.png') no-repeat center;
display: block;
width: 36px;
height :42px;
position: relative;
margin :25px 0px 0px -25px;
z-index: 2;
top :50%;
left :50%;
content: '';
}