.hover-line {
    position: relative;
    display: inline-block;
    text-decoration: none;
    /* 去掉下划线 */
    color: black;
    /* 文本颜色 */
}

.hover-line:before {
    content: '';
    position: absolute;
    width: 0;
    /* 初始宽度为0 */
    height: 3px;
    /* 线的高度 */
    bottom: -5px;
    /* 紧贴文字底部 */
    left: 0;
    background-color: #1867bf;
    /* 线的颜色 */
    transition: width 0.5s ease-out;
    /* 动画效果 */
}

.hover-line:hover:before {
    width: 100%;
    /* hover时宽度变为100% */
}

/* 定义从上到下滑动出现的动画 */
@keyframes slideDown {
    from {
        transform: translateY(-5%);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.mymenu {
    background-color: #fff;
    overflow: hidden;
    width: 100vw;
    height: 600px;
    display: flex;
    position: fixed;
    top: 72px;
    left: 0;
    justify-content: center;
    z-index: 10000;
    display: none;
    flex-direction: row;
}

.mymenu-show {
    display: block;
    /* 应用动画 */
    animation: slideDown 1s ease-out forwards;
}

.mymenu-area {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: row;
}

.mymenu-left {
    width: 20%;
    height: 100%;
    background-color: #1867bf;
    display: flex;
    flex-direction: column;
}

.mymenu-center {
    width: 20%;
    height: 100%;
    background-color: #1867bf;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}

.mymenu-right {
    width: 60%;
    height: 100%;
    display: flex;
    border-bottom: 1px solid #1867bf;
}

.mymenu-left-title {
    width: 100%;
    height: 30%;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    color: #fff;
    font-size: 36px;
    font-weight: 500;
    letter-spacing: 4px;
}

.mymenu-left-line {
    width: 100%;
    height: 10%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.mymenu-left-line hr {
    width: 100px;
    height: 4px;
    background-color: #fff;
}

.mymenu-left-desc {
    width: 100%;
    height: 60%;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.mymenu-left-desc p {
    color: #fff;
    font-size: 16px;
    font-weight: 300;
    width: 80%;
    line-height: 28px;
    text-indent: 2em;
    letter-spacing: 1px;
}

.mymenu-center-line {
    width: 10%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.mymenu-center-line hr {
    width: 2px;
    height: 80%;
    background-color: #fff;
}

.mymenu-center-menu {
    width: 90%;
    height: 90%;
}

.mymenu-center-menu-item {
    width: 100%;
    display: flex;
}

.mymenu-center-menu-item-title {
    width: 100%;
    height: 100%;
    margin-left: 40px;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}

.mymenu-center-menu-item-title a {
    width: 80%;
    color: #fff;
    font-size: 18px;
    font-weight: 500;
    letter-spacing: 2px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

.sanjiao-area {
    width: 20%;
    display: flex;
    justify-content: flex-end;
    align-items: flex-end;
}

.sanjiao {
    width: 0;
    height: 0;
    border-width: 16px 26px 16px 16px;
    border-style: solid;
    border-color: transparent #fff transparent transparent;
    display: none;
}

.mymenu-right-area {
    width: 100%;
    height: 100%;
    display: none;
    background-color: #fff;
    flex-direction: row;
}

.area-about-left {
    width: 50%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.area-about-right {
    width: 50%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.mymenu-right-area-img {
    width: 100%;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.mymenu-right-area-img img {
    width: 90%;
    height: 400px;
    object-fit: cover;
}

.mymenu-right-area-title {
    width: 90%;
    height: 80px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    color: #000;
    font-size: 20px;
    font-weight: 500;
    letter-spacing: 2px;
}

.mymenu-right-area-desc {
    width: 90%;
    height: 120px;
    display: flex;
}

.mymenu-right-area-desc p {
    color: #000;
    font-size: 16px;
    font-weight: 300;
}

.mysubmenu-show {
    display: flex;
    /* 应用动画 */
    animation: slideDown 1s ease-out forwards;
}