.wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header styles */
.beautify {
    text-align: center;
    font-size: 1.2em;
    color: #2c3e50;
    margin-bottom: 30px;
    padding: 20px;
    background-color: #ecf0f1;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Grid layout */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

/* Button styles */
.prblm_btn {
    background-color: #3498db;
    border: none;
    color: white;
    padding: 15px 25px;
    text-align: left;
    text-decoration: none;
    display: flex;
    align-items: center;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.prblm_btn i {
    margin-left: auto;
    transition: transform 0.3s ease;
}

.prblm_btn:hover i {
    transform: rotate(180deg);
}

.prblm_btn:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

/* Dialog styles */
.dialog {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.5);
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.dialog__inner {
    background-color: #fff;
    margin: 10% auto;
    padding: 20px;
    border-radius: 8px;
    width: 80%;
    max-width: 600px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    position: relative;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s;
}

.close:hover,
.close:focus {
    color: #2c3e50;
    text-decoration: none;
}

/* Problem statement styles */
.prblm_color {
    color: #2ecc71;
    cursor: pointer;
    display: block;
    padding: 15px;
    margin: 5px 0;
    border-radius: 5px;
    background-color: #eafaf0;
    transition: background-color 0.3s ease;
}

.prblm_color:hover {
    background-color: #27ae60;
    color: white;
    text-decoration: none;
}

/* Table styles */
#descriptionTable {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

#descriptionTable th, #descriptionTable td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

#descriptionTable th {
    background-color: #f2f2f2;
    font-weight: bold;
    width: 30%;
}

#descriptionTable tr:nth-child(even) {
    background-color: #f9f9f9;
}
#PSD_head{
    color:#0e1b4d;
    font-size: 25px;
    text-align: center;
    font-weight: 600;
}


@media all and (max-width: 500px){
    .dialog__inner{
        margin: 20% 0%;
        min-width: 100%;

    }
    #speakers p{
        padding:10px;
    }
    #PSD_head{
        color:#0e1b4d;
        font-size: 25px;
        text-align: center;
        font-weight: 600;
    }
}