.sousuo {
    padding: 30px 0 50px 0;
}

.search {
    position: relative;
    width: 100%;
    margin: 0 auto;
}

.search-box {
    position: relative;
}

.search-icon {
    position: absolute;
    left: 15px;
    top: 15px;
    width: 25px;
    overflow: hidden;
    cursor: pointer;
}

.search-input {
    width: calc(100% - 55px);
    height: 50px;
    line-height: 50px;
    font-size: 16px;
    color: #999;
    border: none;
    outline: none;
    padding-left: 55px;
    border: 1px solid #e6e6e6;
    border-radius: 10px;
}

.search-input:focus {
    outline: none;
    border: 1px solid #2188ff;
    -webkit-box-shadow: 0 0 5px 0px rgba(71,158,245,0.5);
    box-shadow: 0 0 5px 0px rgba(71,158,245,0.5);
}

input::-webkit-input-placeholder {
    font-size: 12px;
    letter-spacing: 1px;
    color: #ccc;
}

.search-btn {
    position: absolute;
    right: 0;
    top: 12px;
    width: 50px;
    line-height: 48px;
    background: transparent;
    border: none;
    font-size: 25px;
    color: #ddd;
    font-weight: bold;
    outline: none;
    padding: 0 10px;
    cursor: pointer;
}

.search-engine {
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    background: #FFF;
    padding: 15px 0 0 0;
    border-radius: 5px;
    box-shadow: 0px 5px 20px 0px #d8d7d7;
    transition: all 0.3s;
    -moz-transition: all 0.3s;
    -webkit-transition: all 0.3s;
    -o-transition: all 0.3s;
    display: none;
    z-index: 999;
}

.search-engine-list::after {
    content: '';
    width: 100%;
    height: 20px;
    position: absolute;
    top: -20px;
    left: 1px;
}

.search-engine-list li {
    float: left;
    width: 30%;
    line-height: 30px;
    font-size: 14px;
    padding: 5px 10px 5px 10px;
    margin: 0 10px 10px 0;
    background: #f9f9f9;
    color: #999;
    cursor: pointer;
    list-style-type: none;
}

.search-engine-list li img {
    float: left;
    width: 25px;
    border-radius: 15px;
    margin-right: 5px;
    margin-top: 2.5px;
}

@media (max-width: 480px) {
    .site {
        display:block;
        width: 100%;
        text-align: center;
    }

    .header-menu {
        text-align: justify;
        text-align-last: justify;
    }
}