#container {
    background: linear-gradient(#1d538d, #7c90a1);
}
.panel {
    background: #fff;
    border-radius: 10px !important;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}
#contenedor_img {
    display: flex;
    justify-content: center;
    align-items: center;  
}
i {
    color: #1d538d;
}
span {
    border-color: #cacaca !important;
    border-radius: 5px !important;
}
input {
    border-color: #cacaca !important;
    border-radius: 5px !important;
}
#btnIngresar {
    border-radius: 5px !important;
}