*{
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    background-color: rgb(207, 236, 225);
}
header{
    margin: 10px;
    text-align: center;
    font-size: 40px;
}
.catrv-section {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 5px 0 5px;
}
.catrv-grid {
    margin: 30px;
    padding: 0;
    display: flex;
    text-align: center;
    width: 100%;
    justify-content: space-evenly;
    flex-wrap: wrap;
}
.catrv-box {
    margin-top: 10px;
    width: 100%;
    height: 100%;
    position: relative;
    cursor: pointer;
    border-radius: 10px;
}
.catrv-info {
    width:auto;
    position: relative; 
}
button {
    padding: 0.6rem;
    font-weight: bold;
    border-radius: 0.9rem;
    cursor: pointer;
    outline: none;
    font-size: 0.9rem;
    background:green;
    transition: all 0.3s linear;
    color: #ffffff;
    margin: 10px;
    border: none;
}

button:hover {
    transition: all 0.3s linear;
    background-color: white;
    color:green;
    font-weight: bold;
    cursor: pointer;
}

.btn-index {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    width: 100%;
    margin-top: 1rem;;
}

.btn {
    display: flex;
    justify-content: center;
}

span{
    width: auto;
    display:grid;
    color: #ff0000;
    font-size: 20px;
    align-items: center;
    justify-items: center; 
    text-align: center;
}

footer{
    color:green;
    height: 30px;
    text-align: center;
}