header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #3f51b5;
    color: white;
    padding: 10px 20px;
    text-align: center;
    flex: 0 0 40px;
    border-radius: 2px;
}

header>a {
    text-underline: none;
}

.icon {
    width: 24px;
    height: 24px;
    cursor: pointer;
}


.refresh-icon.disabled {
    fill: #aaa;
    cursor: not-allowed;
}
h1 {
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
}
a {
    text-decoration: none;
}