main.css

body {
    margin: 0;
    padding: 0;
}

.main-wrapper {
    margin: auto;
    display: flex;
    width: 800px;
    height: 550px;
    flex-direction: column;
    padding-top: 20px;
}

.header {
    width: 100%;
    height: 15%;
    text-align: center;
    font-size: 35px;
    background-color: aquamarine;
    vertical-align: middle;
}

.main-body {
    width: 100%;
    height: 75%;
}

.middle-body {
    display: flex;
    width: 100%;
    height: 100%;
}

.footer {
    background-color: aquamarine;
    width: 100%;
    height: 10%;
    text-align: center;
    font-size: 25px;
    vertical-align: middle;
}

.title-text {
    margin-top: 1rem;
}

.first {
    padding-left: 5px;
    padding-top: 5px;
    overflow-y: scroll;
    width: 65%;
    border: 1px solid black;
}

.second {
    padding-left: 5px;
    padding-top: 5px;
    width: 35%;
    border: 1px solid black;
}