* {
    padding: 0;
    margin: 0;
}

.banner img {
    display: block;
    width: 100%;
}

.clear {
    clear: both;
}

ul,
li {
    list-style: none;
}

.mk1 {
    padding-top: 50px;
}

.mk1 h3 {
    font-size: 40px;
    text-align: center;
    color: #515151;
}

.mk1 p {
    font-size: 30px;
    text-align: center;
    color: #515151;
}

.mk1_nr {
    width: 1200px;
    margin: auto;
    font-size: 24px;
    line-height: 2;
    padding-top: 40px;
}

.mk1_nr img {
    float: left;
    margin-right: 25px;
}

.mk1_nr span {
    color: #ff0000;
}

.zx {
    width: 500px;
    height: 50px;
    line-height: 50px;
    background: #1ccfeb;
    border-radius: 20px;
    margin: 30px auto;
    text-align: center;
}

.zx a {
    font-size: 24px;
    text-align: center;
    color: aliceblue;
    text-decoration: none;
}

.zx svg {
    vertical-align: middle;
    margin-left: 20px;
}

.mk2 {
    background-color: #4cd8ef;
    padding-top: 50px;
    padding-bottom: 50px;
}

.mk2 h3 {
    font-size: 40px;
    text-align: center;
    color: #fff;
}

.mk2 p {
    font-size: 30px;
    text-align: center;
    color: #fff;
}

.mk2_nr {
    width: 1200px;
    margin: 35px auto;
}

.mk2 .zx {
    background-color: #fff;
}

.mk2 .zx a {
    color: #4cd8ef;
}

.mk3 {
    padding-top: 50px;
}

.mk3 h3 {
    font-size: 40px;
    text-align: center;
    color: #515151;
}

.mk3 p {
    font-size: 30px;
    text-align: center;
    color: #515151;
}

.mk3 ul {
    width: 1200px;
    margin: auto;
    padding-top: 45px;
}

.mk3 ul li {
    float: left;
    margin-left: 20px;
}

.mk3 ul li:nth-of-type(2n+1) {
    margin-left: 0;
}

.mk3_l {
    width: 225px;
    height: 193px;
    float: left;
    background-color: #1ccfeb;
}

.mk3_l h4 {
    font-size: 45px;
    font-weight: bold;
    color: #ffc600;
    text-align: center;
    margin-top: 20px;
    margin-bottom: 20px;
}

.mk3_l p {
    width: 80%;
    margin: auto;
    padding-top: 20px;
    border-top: 1px solid #fff;
    color: #fff;
    font-size: 30px;
}

.mk3 ul li:nth-of-type(3),
.mk3 ul li:nth-of-type(4),
.mk3 ul li:nth-of-type(5),
.mk3 ul li:nth-of-type(6) {
    margin-top: 20px;
}

.mk4 {
    padding-top: 50px;
}

.mk4 h3,
.mk5 h3 {
    font-size: 40px;
    text-align: center;
    color: #515151;
}

.mk4 p {
    font-size: 30px;
    text-align: center;
    color: #515151;
}

.mk4 ul {
    padding-top: 40px;
}

.mk4 ul li {
    width: 25%;
    float: left;
    box-sizing: border-box;
    padding: 2px;
}

.mk4 ul li:nth-of-type(1) img {
    height: 597px;
}

.mk4 ul li img {
    display: block;
    width: 100%;
    height: 295px;
    margin-top: 5px;
}

.mk5 ul {
    width: 1200px;
    margin: auto;
    padding-top: 45px;
}

.mk5 ul li {
    width: 25%;
    float: left;
    position: relative;
}

.mk5 ul li p {
    position: absolute;
    padding: 10px 0;
    background: #fff;
    bottom: 0;
    width: 100%;
    text-align: center;
    opacity: .8;
    color: #000;
}

.mk5 ul li p a {
    color: #515151;
    font-weight: bold;
}