.main_search_position {
    position: absolute;
    top: 32%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.main_btn {
    height: 400px;
    width: 100%;
    position: absolute;
    bottom: 14%;
    display: flex;
    justify-content: space-around;
    padding: 0 6%;
    box-sizing: border-box;
}

.btn1 {
    color: red;
    height: 398px;
    width: 354px;
    background-image: url('/platform/image/btn1.png');
    background-size: 100% 100%;

    box-shadow: 0px 4px 50px 0px #2287ef;
}
.btn2 {
    color: red;
    height: 398px;
    width: 354px;
    background-image: url('/platform/image/btn2.png');
    background-size: 100% 100%;

    box-shadow: 0px 4px 50px 0px #2287ef;
}
.btn3 {
    color: red;
    height: 398px;
    width: 354px;
    background-image: url('/platform/image/btn3.png');
    background-size: 100% 100%;

    box-shadow: 0px 4px 50px 0px #2287ef;
}
.btn4 {
    color: red;
    height: 398px;
    width: 354px;
    background-image: url('/platform/image/btn4.png');
    background-size: 100% 100%;

    box-shadow: 0px 4px 50px 0px #2287ef;
}

.fullscreen-mask {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    display: none;
}
.mask-content {
    color: #fff;
    font-size: 80px;
    padding: 20px;
    border: 2px solid #fff;
    border-radius: 10px;
    cursor: pointer;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}