.starter-template {
    padding: 3rem 1.5rem;
    text-align: center;
}

.sublead {
    color: #4c77a6;
}

header {
    width: 100%;
    height: 100%;
    /* background: url(header.png) center center no-repeat; */
    background-size: cover;
}

.header-title {
    text-align: center;
    color: cadetblue;
    padding-top: 50px;
}

p {
    text-align: justify;
}

.btn-back{
    position:absolute; 
    top:10px; 
    left:10px;
    display: none;
}

.img-container{
    text-align: center;
}