img{
transition: all cubic-bezier(.46,.03,.52,.96)0.4s 0.2s;
}
.mw-collapsible-toggle-expanded .song-list img {
position: relative;
top: -0.1px;
left: -0.5px;
}
.mw-collapsible-toggle-expanded img {
transform: rotate( 180deg );
position: relative;
}
.mw-collapsible-toggle-expanded .other img {
transform: rotate( -180deg );
position: relative;
}