.mobile-preview
{
transition: .3s all;
width: 425px;
height: 720px;
border-top-width: 20px !important;
border-radius: 8px;
border-width: 3px;
border-color: rgb(53, 53, 53);
}
.tablet-preview
{
transition: .3s all;
width: 768px;
height: 1024px;
border-top-width: 20px !important;
border-radius: 8px;
border-width: 3px;
border-color: rgb(53, 53, 53);
}
.desktop-preview
{
transition: .3s all;
width: 1366px;
height: 768px;
border-color: rgb(53, 53, 53);
}