body, html {
    font-family: 'Microsoft YaHei', 'Arial', '宋体', 'sans-serif';
}

a,
a:hover,
a:active,
a:focus {
    text-decoration: none;
}

.header-title,
.header-title:active,
.header-title:focus {
    color: #464646;
    font-weight: bold;
}
.header-title.active,
.header-title:hover {
    color: #9d9d9d;
    text-decoration: none;
}

.header {
    font-size: 18px;
    padding: 30px 0;
}
.header-block {
    padding: 10px 0;
}

.main {
    background: #464646;
}
.main-item {
    padding: 0;
    margin-bottom: 50px;
}
.main-item:last-of-type {
    margin-bottom: 10px;
}
.main-block {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: #fff;
    height: 740px;
}
.main-block a {
    color: #fff;
}
.main-block--1 {
    background: url(../images/bg_main_1.jpg) no-repeat center center;
    background-size: cover;
}
.main-block--2 {
    background: url(../images/bg_main_2.jpg) no-repeat center center;
    background-size: cover;
}
.main-block--3 {
    background: url(../images/bg_main_3.png) no-repeat center center;
    background-size: cover;
}
.main-block__title {
    font-size: 50px;
    font-weight: bold;
}
.main-block__title::after {
    display: block;
    content: '';
    width: 80%;
    border-bottom: 1px solid #fff;
    padding: 5px 0;
    margin: 0 auto 5px;
}
.main-block__sub {
    font-size: 36px;
}
.main-more {
    font-size: 18px;
    margin: 0 20px 30px 0;
    animation: shaking 1s linear infinite;
}
@keyframes shaking {
    25% {
        margin-right: 40px;
    }
    50% {
        margin-right: 30px;
    }
    75% {
        margin-right: 20px;
    }
    100% {
        margin-right: 10px;
    }
}
.footer {
    color: #a3a3a3;
    background-color: #464646;
    padding: 50px 0 40px;
    margin: 0 auto;
    /*text-align: center;*/
}

@media (max-width: 1366px) {
    .main-block {
        height: 600px;
    }
    .main-block__title {
        font-size: 36px;
    }
    .main-block__sub {
        font-size: 24px;
    }
}