* {
    padding: 0;
    margin: 0;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 18px;
    background: rgb(2, 0, 36);
    background: linear-gradient(90deg, rgba(2, 0, 36, 1) 0%, rgba(254, 209, 72, 1) 37%);

}

#menu {
    background-color: rgba(253, 253, 113, 0.897);
    height: 30px;
    width: 96.8%;
    top: 30px;
    margin-left: 19px;
    text-align: center;
    position: sticky;

}

#menu ul {
    display: inline-block;
}

#menu li {
    float: left;
    padding-top: 6px;
    margin-left: 30px;
    list-style-type: none;
    text-align: center;
    text-transform: uppercase;
    font-family: Arial, Helvetica, sans-serif;
    vertical-align: middle;

}

#window {
    margin: 31px 0px 5px 0px;
}

.kastl1 {
    height: 541px;
    width: 100%;
    display: inline-block;
    /*text-align: center;*/
    padding-left: 14px;

}

.kastl2 {
    /* height: 522px;*/
    width: 100%;
    background-color: #d3d3d3;
    display: inline-block;
    text-align: center;
    position: absolute;
    min-height: 100%;
}

.box {
    width: 48%;
    height: 250px;
    display: inline-block;
    margin: 5px;
}

#kastlviolet {
    background-color: rgb(69, 21, 88);
    color: lavender;
}

#kastlblue {
    background-color: rgb(36, 142, 204);
}

#kastlgreen {
    background-color: rgb(138, 238, 71);
}

#kastlred {
    background-color: red;
}

.box-text {
    width: 48%;
    text-align: justify;
    display: inline-block;
    margin: 5px;
}

.kastl-text {
    margin: 10px;
    padding: 15px;
    text-align: justify;
}

.mittig {
    display: table;
    vertical-align: middle;
    padding: 15%;
}