* {
    margin: 0;
    padding: 0;
}

html {
    width: 100%;
    height: 100%;
}

body {
    display: flex;
    align-items: center;
    width: 100%;
    height: 100%;
    color: #282828;
    background: #ff5800 url('./bg.jpg') center/cover no-repeat;
    box-sizing: border-box;
}

a {
    text-decoration: none;
}

.red {
    color: red;
}

.gray {
    color: gray
}

.mt-8 {
    margin-top: .08rem;
}

.mt-20 {
    margin-top: .2rem;
}

.mt-32 {
    margin-top: .32rem;
}

.text-left {
    text-align: left;
}

.main {
    position: relative;
    margin: 0 auto 0;
    width: 80%;
    max-width: 580px;
    text-align: center;
    font-size: .18rem;
}

.logo {
    position: absolute;
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    border: 1px solid white;
    top: -.5rem;
    left: 0;
    right: 0;
    margin: 0 auto;
    background: #fff url('./logo.png') center/contain no-repeat;
}

h1 {
    letter-spacing: .04rem;
}

.collect {
    letter-spacing: .06rem;
}

.container {
    padding: .8rem .2rem .32rem;
    background-color: #fff;
    border-radius: .2rem;
}

.footer {
    padding: .16rem;
    background-color: #ffeebb;
    border-radius: .16rem;
}

.web {
    display: inline-block;
    padding: .2rem;
    width: 88%;
    background-color: #02c31f;
    color: #fff;
    font-size: .22rem;
    border-radius: .08rem;
    transition: all .3s;
    box-sizing: border-box;
}
.close {
    display: inline-block;
    padding: 2px 0.12rem;
    border-top-left-radius: 0.06rem;
    border-top-right-radius: 0.06rem;
    color: #fff;
    background-color: #02c31f;
}

.web:hover {
    background-color: #03ae1d;
}

.btn-group {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    color: #fff;
}

.btn-group a {
    display: block;
    color: #fff;
}

.btn-group span {
    width: 46%;
    height: .6rem;
    line-height: .6rem;
    margin: .12rem 2%;
    background: #ff5800 linear-gradient(#ff8800, #ff5800);
    border-radius: .6rem;
}

@media screen and (max-width: 420px) {
    .btn-group span {
        width: 100%;
    }
}