/* Home Page */
#introduce{
    padding: 0 80px;
    display: flex;
    flex-direction:column;
    justify-content: center;
}

h2 {
    font-size: 40px;
    color: #115B7B;
    line-height: 36px;
    margin: 20px;   
}

h4 {
    font-size: 36px;
    color: #222;
}

p{
    font-size: 16px;
    color: black;
    line-height:30px;
    font-style: italic;
}

.osection{
    flex: 1 1 calc(25% - 20px);
    max-width: calc(25% - 20px);
    position:relative;
    width: 23%;
    height: 50%;
    /* border: 1px solid #cce7d0; */
    cursor:pointer;
    box-shadow:20px rgba(3, 17, 57, 0.1);
    margin: 15px 0;
    transition:0.2s ease;
    text-align:center;
    text-decoration: none;
}

.osection:hover{
    box-shadow: 20px 20px 30px rgba(3, 17, 57, 0.1);
}

.ocontainer{
    display:flex;
    flex-wrap:wrap;
    gap:20px;
    justify-content: space-between;
    padding-top:20px;
}

.osection img{
    width: 100%;
    border-radius:20px;
}

.osection a{
    text-decoration: none;
    font-size: 18px;
    font-weight: 600;
    color: #115B7B;
    transition: 0.3s ease;
}

.osection a.active::after,
.osection a:hover::after {
    content: "";
    width: 30%;
    height: 2px;
    background: #1D94C7;
    position: absolute;
    bottom: -4px;
    left: 20px;
}

#close{
    display:none;
}