* {
    box-sizing: border-box;
}
body {
    margin: 0;
    padding: 0;
    height: 100vh;
    background-color: lightseagreen;
    font-size: large;
    font-family: 'Times New Roman', Times, serif;
}
.banner{
    align-items: center;
    height: 550px;
    width: 2050px;
}
nav{
    background-color: #333;
}
a{
    text-decoration: none;
    color: white;
    align-items: center;
    padding: 10px;
}
#salida{
    text-align: center;
}
.envios{
    display: flex;
    justify-content: center;
    align-items: center;
}
.ocultar{
    display: none;
}
p,.mostrar{
    display: block;
}
.imagen{
    width: 750px;
    height: 650px;
}
.texto{
    text-align: center;

}
#formulario{
    text-align: center;
}