html {
    box-sizing: border-box;
}

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

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
}

body {
    margin: 0;
    font-family: 'Roboto', Verdana, sans-serif;
    min-width: 100%;
    min-height: 100%;
    background-color: #F5F5F5;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    height: 75px;
    padding: 0 75px;
    background: #F05454;
}

.user {
    display: flex;
    cursor: pointer;
}

.logo {
    width: 50px;
}

.username {
    margin-right: 20px;
    font-size: 18px;
    font-weight: 700;
    line-height: 21px;
    color: #fff;
}

.avatar {
    width: 50px;
    height: 50px;
    border: 2px solid #fff;
    border-radius: 50%;
    background: #19C5FB url('img/avatar.png') no-repeat center center;
    background-size: 75%;
}