.bgm img{ width: 100%; height: 100%;} .btn { position: absolute; left: 50%; bottom: .55rem; transform: translateX(-50%); width: 2.83rem; height: .72rem; background: #E40006; border-radius: .12rem; text-align: center; line-height: .72rem; color: #fff; font-size: .36rem; font-weight: bold;}
.bgm img{
width: 100%;
height: 100%;
}
.btn {
position: absolute;
left: 50%;
bottom: .55rem;
transform: translateX(-50%);
width: 2.83rem;
height: .72rem;
background: #E40006;
border-radius: .12rem;
text-align: center;
line-height: .72rem;
color: #fff;
font-size: .36rem;
font-weight: bold;