.contenedor {
    border: 1px solid black;
    width: 80%;
    margin: auto;
}

h2{
    margin-left: 10px;
    margin-top: 5px;
}

.flexible{
    display: flex;
    justify-content: space-around;
	align-items: center;
}

.fb{
    background-color: rgb(20, 20, 151);
    padding: 10px 0px;
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.fb a{
    text-decoration: none;
    color: white;
}

.fb img{
    width: 20px;
    padding: 5px;
}

.tw{
    background-color: rgb(99, 164, 244);
    padding: 10px 0px;
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.tw a{
    text-decoration: none;
    color: white;
}

.tw img{
    width: 20px;
    padding: 5px;
}

.g{
    background-color: rgb(227, 15, 15);
    padding: 10px 0px;
    display: flex;
    align-items: center;
}

.g a{
    text-decoration: none;
    color: white;
}

.g img{
    width: 20px;
    padding: 5px;
}

.linea{
    border-left: 2px grey solid;
    width: 0.3px;
    height: 200px;
}

.fa, .fas {
	font-weight: 900;
    position: absolute;
    top: 15%;
    left:48.60%;
	}

input[type=text], input[type=password]{
    padding: 10px;

}
	
.flexible input[type=submit]{
    width: 100%;
    background-color: green;
    padding: 10px;
    border: 1px outset grey;
    color: white;
}

.pie{
    background-color: grey;
    padding: 10px;
    overflow: hidden;
    margin-top: 20px;
}

.pie input[type=submit]{
    background-color: transparent;
    color: white;
    padding: 10px;
    border: 2px solid black;
    float: left;
    margin-left: 350px;
}

.pie a{
    text-decoration: none;
    color: white;
    float: right;
    margin-right: 125px;
    margin-top: 13px;
}

:is(input[type=text], input[type=password]):invalid{
    background-color: red;
}

:is(input[type=text], input[type=password]):use-invalid{
    background-color: red;
}

:is(input[type=text], input[type=password]):valid{
    background-color: green;

}:is(input[type=text], input[type=password]):user-valid{
    background-color: green;
}


.formulario form {
    display: flex;
    flex-direction: column;
    width: 250px; /* puedes ajustarlo */
}

.formulario label {
    margin-bottom: 5px;
}

.formulario input[type=text],
.formulario input[type=password] {
    margin-bottom: 15px;
    width: 100%;
}