html {
    margin: 0;
    padding: 0;
}

body {
    background-color: #efefef;
    margin: 0;
    padding: 0;
}

h1 {
    text-align: center;
    color: #555555;
    font-size: xxx-large;
}

.start {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.startBtns {
    cursor: pointer;
    width: 350px;
    padding: 2em;
    font-size: x-large;
    color: white;
    margin: 5em 0;
    border: none;
    outline: none;
    border-radius: 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    transition: box-shadow 0.5s;
}

.startBtns:hover {
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.25), 0 10px 10px rgba(0, 0, 0, 0.22);
    transition: box-shadow 0.5s;
}

.solving {
    background-color: #ff8270;
}

.modeling {
    background-color: #2e4050;
}

.footerPage {
    font-size: 12px;
    padding: 10px 500px 8px 4px;
    text-align: end;
    position: fixed;
    bottom: 0;
    width: 100%;
    color: #454545;
    border-top: 1px solid #d7cdcd;
    font-family: Helvetica;
}

.footerPage a {
    padding: 0 30px;
    color: #00335d;
    text-decoration: none;
}

.footerPage a:hover {
    text-decoration: underline;
}

@media only screen and (max-width: 614px) {
    .footerPage {
        font-size: 2vw;
    }
}

.banner-container {
    font-family: sans-serif;
    background-color: #00335D;
    width: 100%;
    height: 64px;
    margin: 0;
    display: flex;
}

.item-1 {
    margin-left: 10px;
    align-self: center;
}

.items {
    font-weight: 500;
    color: white;
    font-size: 20px;
    top: 0;
    left: 0;
    margin-left: 56px;
}

.item-2::before {
    height: 5px;
    width: 5px;
    background-color: white;
    border-radius: 50%;
}

.item-1 a {
    color: white;
    font-size: 20px;
    text-decoration: none;
    cursor: pointer;
    font-weight: bold;
    letter-spacing: 0px;
    font-family: Helvetica;
}

.item-1-platform {
    font-weight: 100;
}

.item-2 {
    align-self: center;
    margin: 0;
    cursor: default;
}

.item-1,
.item-3 {
    flex: 1;
}

.item-4 {
    width: 40px;
    height: 40px;
}

@media only screen and (max-width: 600px) {
    .banner-container {
        height: 30px;
    }
}