header {
    position: fixed; 
    right: 0;
    left: 0;
    top: 0;
    padding: 10px 20px; 
    background-color: white; 
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); 
    font-family: Arial, sans-serif;
    display: flex;
    
    align-items: center;
    font-size: 17px;
    z-index: 1000;
}

h1 { 
    font-family: "Questrial", sans-serif; 
    
    margin: 0 0 0 10px; 
    font-weight: 400; 
    color: #333;
}

.back-icon {
    width: 20px; 
    padding: 10px;
    transition: background-color 0.2s ease, transform 0.1s ease;
    border-radius: 50%; 
}

.back-icon:hover {
    background-color: #e0f7fa; 
} 

.back-icon:active {
    background-color: #b2ebf2;
}



.flex {
    display: flex;
    justify-content: center; 
    align-items: center; 
    flex-direction: column;
    gap: 15px; 
    width: 100%; 
    padding: 100px 0;
}

.collapsible { 
    border-radius: 8px;
    width: 90%;
    max-width: 800px;
    font-family: "Questrial", sans-serif;
    font-size: 24px;
    color: #333;
    font-weight: 600;
    border: 1px solid #ddd;
    margin: 0;
    text-align: left;
    cursor: pointer;
    background-color: #ffffff;
    padding: 15px 25px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease;
}

.collapsible:hover {
    background-color: #f0f0f0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.slide-down-text {
    border-radius: 8px;
    overflow: hidden;
    width: 90%;
    max-width: 800px;
    color: #333;
    max-height: 0;
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    text-align: left;
    transition: max-height 0.4s ease-in-out, padding 0.4s ease;
    background-color: #e9e9e9;
    padding: 0px 25px;
    border: 1px solid #ddd;
    border-top: none;
}

.slide-down-text p {
    font-size: 16px;
    line-height: 1.6;
    margin: 10px 0;
}

.slide-down-text.open {
    max-height: 500px;
    padding: 15px 25px;
}