header {
    display: flex;
    justify-content: space-between;
    padding: 1.5rem;
}
header .left{
    display: flex;
    align-items: center;
}
header .left a{
    width: 15%;
}
header .left .back{
    width: 100%;
}
header .left .title{
    font-size: 1.4rem;
    font-weight: 500;
    margin-left: 1rem;
}
header  .logo{
    width: 30%;
}