*, :after, :before {
    box-sizing: inherit;
}

body {
    background-color: #555;
    font-family: BlenderProBook,sans-serif;
    font-weight: 300;
    margin: 0;
    padding: 0;
}

.header{
    position: relative;
    background-color: #fbff31;
    .header-content{
        height: 500px;
        .logo{
            padding: 20px;
            height: 70px;
        }
    }
    :after{
        clear: both;
    }
}

.clp {
    background: rgba(0, 0, 0, 0.6);
    position: relative;
    clip-path: polygon(15px 0,100% 0px,100% calc(100% - 15px),calc(100% - 15px) calc(100%),calc(100% - 15px) 2000%,0 2000%,0 15.3333333333px);
}

.menu{
    display: flex;
    position: fixed;
    margin: 2px;
    top: 20px;
    right: 70px;
    height:40px;
    z-index: 10;
}

.menu:hover{
    border: #3CF solid 2px;
    margin: 0;
}

.menu-list {
    padding: 0 10px 0 10px;
    list-style: none;
    align-items: center;
    height: 100%;
    line-height: 100%;
    display: flex;
    margin: 0;

    .menu-item {
        align-items: center;
        color: #fff;
        cursor: pointer;
        display: flex;
        font-family: BlenderProBook,sans-serif;
        font-size: 22px;
        font-style: normal;
        font-weight: 400;
        height: 100%;
        line-height: 100%;
        position: relative;
        text-transform: uppercase;
        span{
            align-items: center;
            padding: 0 7px 0 7px;
        }
    }
    .menu-item:hover{
        background-color: #3CF;
        .sub-menu{
            float:left;
            display: block;
        }
    }
    .menu-sub::after {
        border-left: 4px solid transparent;
        border-right: 4px solid transparent;
        border-top: 6px solid #fff;
        content: "";
        display: inline-block;
        height: 6px;
        margin-left: 6px;
        position: relative;
        width: 0px;
    }
    .sub-menu{
        display: none;
        background: rgba(255, 255, 255, 0);
        position: absolute;
        float: left;
        left: 0px;
        top: 40px;
        :after{
            clear: both;
        }
    }
    .sub-menu-list{
        list-style: none;
        background: rgba(255, 255, 255, 0);
        padding-left: 0;
        .sub-menu-item{
            padding: 5px 20px 5px 20px;
            background: rgba(0, 0, 0, 0.6);
            white-space: nowrap;
            line-height: 100%;
            height: 30px;
        }
        .sub-menu-item:hover{
            background-color: #3CF;
        }
        li{
            list-style: none;
        }
    }
}

a{
    color: #fff;
    text-decoration: none;
}

.header-title{
    position: absolute;
    top: 130px;
    left: 100px;
    h1{
        font-size: 4em;
        margin: 10px;
    }
    h2{
        color: grey;
        font-size: 1em;
        margin: 5px;
    }
    .author{
        font-size: 1em;
        color: grey;
    }
}

hr{
    background-color: black;
    height: 2px;
}

.header-img{
    position: absolute;
    top: 80px;
    right: 10%;
}