*:root {
    --color-font: #333;
}

*,
*:before,
*:after {
    margin: 0;
    padding: 0;
    box-sizing: inherit;
}

html {
    font-size: 62.5%;
    box-sizing: border-box;
    color: var(--color-font);
}

body {
    font-family: Roboto, sans-serif;
    font-size: 1.5rem;
}

.wrapper {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;    
}

.projects {
    margin-left: 10rem;
}

.contacts {
    margin-left: 10rem;
}

.contacts span {
    padding: 1.5rem;
    font-size: 1.8rem;
}

h1 {
    font-size: 3.5rem;
}

h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
}

ul {
    text-align: center;
    list-style: none;
}

ul li {
    cursor: pointer;
    transition: all .1s;
}

a:hover{
    border-bottom: 3px solid var(--color-font);
}

a {
    border-radius: 5px;
    border: 3px solid transparent;
    display: inline-block;
    padding: 1.2rem;
    color: var(--color-font);
    text-decoration: none;
}

@media(max-width: 960px) {

    .wrapper {
        flex-direction: column;
    }

    .projects,
    .contacts {
        margin-left: 0;
        margin-top: 6rem;
    }

    .contacts span {
        padding: 1rem;
        font-size: 1.8rem;
    }

}