* {
    box-sizing: border-box;
}
body {
    background-image: url(../img/bg.jpg);
    background-size: 100%;
    background-repeat: no-repeat;
    background-position: top center;
    
}
header {
    display: block;
    margin: 80px auto 50px;
    text-align: center;
}
.header-top {
    font-size: 36px;
    line-height: 24px;
    font-weight: bold;
    color: #00bbf2;
    text-transform: uppercase;
}
.header-text {
    font-size: 24px;
    font-weight: normal;
}
.sec-accord {
    display: block;
    margin: 0 auto;
    text-align: center;
    width: 860px;
}
.accordion {
    border: none;
    
}
.accordion>.card:not(:last-of-type) {
    background-color: transparent;   
    
}
.accordion>.card {
    border: none;    
}
.accordion>.card>.card-header {
    background-color: #00bbf2;
    margin-bottom: 4px;    
}

.btn-link {
    color: #fff;
    font-size: 22px;
    text-align: center;
}
.btn-link:hover {
    color: #fff;
    text-decoration: none;
}

.show {
    display: block;
    text-align: center;
    margin: 0 auto;
    width: 840px;
    border: 3px solid #dddddd;
    border-top: none;
    background-color: #fff;
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
    margin-top: -4px;
}
.card-body {    
    font-size: 22px;
    text-align: left;
}