* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.sln-body {
    font-family: 'Helvetica Neue', sans-serif;
    background-color: #e8f4f8;
    color: #222;
    line-height: 1.5;
    padding: 25px;
}

.sln-cnt {
    margin: 0 auto;
    background-color: #ffffff;
    padding: 35px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
}

.sln-ttl {
    font-size: 2.8em;
    margin-bottom: 25px;
    color: #1a5276;
    text-align: center;
}

.sln-subttl {
    font-size: 1.6em;
    margin-bottom: 18px;
    color: #21618c;
    text-align: center;
    padding-left: 30vw;
}

.sln-txt {
    font-size: 1.3em;
    line-height: 1.5;
    color: #444;
    text-align: center;
}

.sln-img-cnt {
    text-align: center;
    margin-bottom: 25px;
    width: auto;
    height: auto;
}

.sln-img-1 {
    width: 40vw;
    height: 80vh;
    border-radius: 8px;
}

.sln-img-2 {
    width: 40vw;
    height: 80vh;
    border-radius: 8px;
}

.sln-img-3 {
    width: 40vw;
    height: 80vh;
    border-radius: 8px;
}

.sln-img-4 {
    width: 40vw;
    height: 80vh;
    border-radius: 8px;
}

.sln-img-5 {
    width: 40vw;
    height: 80vh;
    border-radius: 8px;
}