.principal{
    padding: 160px 0;
    background: grey;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center center;
}

.principal p, .principal h1, .principal small {
    color: #fff;
}

.principal p
{
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.43);
}

.principal h1 {
    font-size: 2.7rem;
    margin: 0;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.43);
}

.principal small {    
    font-size: 14px;
    /*font-weight: 600;*/
    text-shadow: 1px 1px 4px rgba(0,0,0,0.43);
}

.principal .input-group
{
    border-radius: 8px;
    outline: 0;
    box-shadow: 0 0 0 0.25rem rgba(255, 255, 255, 0.2);
}

.principal .btn-buscar {
    font-weight: normal;
    padding-left: 15px;
    padding-right: 15px;
    font-size: 16px;
}

.principal .input-buscar{
    font-size: 16px;
}

.principal .form-select {
    font-size: 16px;
    width: 25%;
    flex: 0 1 auto;
}




/* Extra small devices (portrait phones, less than 576px) */
@media (max-width: 575.98px) { 
    
}

/* Small devices (landscape phones, less than 768px) */
@media (max-width: 767.98px) 
{
    
}

/* Medium devices (tablets, less than 992px) */
@media (max-width: 991.98px) { 
    
}

/* Large devices (desktops, less than 1200px) */
@media (max-width: 1199.98px) { 

}