body, html{
    height: 100%;
    margin: 0;
    background: rgb(2,0,36);
    background: linear-gradient(90deg, rgba(2,0,36,1) 0%, rgba(116,9,121,1) 30%, rgba(247,0,0,1) 59%, rgba(232,255,0,1) 100%);
}

.container{
    height: 100%;
    min-height: 100%;
    display: flex;
    flex-direction: column;
    background-image: url(../gfx/bg2.png);
    background-size: 600px;
    background-repeat: no-repeat;
    background-position: right bottom;
}

.header{
    height: auto;
    display: flex;
    background-color: white;
}

.content{
    flex: 1;
    display: flex;
    flex-direction: row;
    align-items: center;
}

.content_menu{
    width: 300px;
}

.content_main{
    flex: 1;
}

.header_left{
    flex: 1;
}

.header_center{
    width: auto;
}

.header_right{
    flex: 1;
}

.header_center ul{
    list-style-type: none;
    margin: 0;
    padding: 0;
}

.header_center li{
    float:left;
}

.header_center li a {
    color: black;
    text-decoration: none;
    display: block;
    padding: 14px 16px;
}

.header_center li a:hover{
    background-color: black;
    color: white;
}

.content_menu_container{
    background-color: green;
}

.contentimg{
    max-width: 200px;
    border-radius: 500px;
    overflow: hidden;
    margin: auto;
    display: block;
    box-shadow: 4px 4px 4px rgba(0, 0, 0, 0.5);
}