body{
    overflow: hidden;
}
section{
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}
.img-box{
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    flex: 0 40%;
    text-decoration: none;
    mix-blend-mode: lighten;
    height: calc(100vh - 159px);
}
.img-box img{
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
}
.main{
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
    flex: 0 60%;
    padding: 0 1rem 1rem;
    text-decoration: none;
    height: calc(100vh - 159px);
}
.main-box{
    width: 100%;
    height: calc(100% - 120px);
    background: rgba(255, 255, 255, .5);
    border-radius: 10px;
    padding: 1rem 0rem 1rem 2rem;
}
.main-word{
    width: 100%;
    height: 100%;
    padding: 0 2rem 0 0;
    overflow-y: scroll;
}
.main-word::-webkit-scrollbar {
    /*滚动条整体样式*/
    width : 10px;  /*高宽分别对应横竖滚动条的尺寸*/
    height: 1px;
}
.main-word::-webkit-scrollbar-thumb {
    /*滚动条里面小方块*/
    border-radius: 10px;
    box-shadow: inset 0 0 3px 2px #036263;
    background: #ccfbfb;
}
.main-word::-webkit-scrollbar-track {
    /*滚动条里面轨道*/
    box-shadow   : inset 0 0 5px rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    background   : transparent;
}
p{
    margin-bottom: 1rem;
}
.btn-calculator{
    margin: auto;
}

@media (max-width: 575px) and (pointer: coarse) {
    .img-box,
    .main{
        flex: 0 100%;
    }
    .img-box{
        position: fixed;
        top: calc(100vh - 300px);
        left: 0;
        width: 100%;
        height: 300px;
        order: 1;
    }
    .img-box img {
        width: auto;
        height: 100%;
    }
    .main{
        height: calc(100vh - 182px);
    }
    .main-box{
        flex: 0 100%;
        z-index: 1;
    }
    .btn-calculator {
        margin: auto 0 0 auto;
        width: 200px;
    }
}