WXDemo/miniprogram/pages/basic/scene-basic-visible-layer/index.wxss

.btn-strap {
    /* background-color: white; */
}
.btn {
    display: inline-block;
    font-size: 80%;
    padding:  5px 0;
    margin: 5px 1% !important;
    width: 48% !important;
}