body {
   margin: 0;
   padding: 0;
   display: flex;
   flex-direction: column;
   min-height: 100vh;
}
.wrapper {
    flex:1;
    display: flex;
}
header {
    width: 100%;
    overflow: hidden;
}
img {
    width: 100%;
    height: auto;
    display: block;
}
.vertical-banner {
    width: 200px;
    background-color:#9F0A0A;
    padding: 20px;
    box-sizing: content-box;
}
main {
    flex: 1;
    padding: 20px;
    box-sizing:border-box;
}
h3 {
    color: red;
    font-size: large;
    text-align: center;
}
h4 {
    color: black;
    font-size: large;
    text-align: center;
}
p {
    color: black;
    font-size: large;
    text-align: center;
}
ul {
    color: black;
    font-size: large;
    text-align: center;
    float: right;
}