html, body{
    margin: 0px;
    width: 100%;
    height: 100%;
   /* background: #f5f5f5;*/
   /* background-image: linear-gradient(to left bottom, #051937, #004d7a, #008793, #00bf72, #a8eb12); */
   background-image: linear-gradient(to right, #CFE0FF, #8BD59E);

  /* background: #292929;*/


}


.container-co{
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;   
    background-color: transparent;
    width: 100%;
    height: 100%;

}

.article{
    display: flex;
    width: 400px;
    height: 300px;
    background-color: transparent;
    margin-bottom: auto;
    margin-top: auto;
}

.prea{

    width: 400px;
    height: 300px;
    margin: 1%;
    /*background: white;*/


    /* background-image: linear-gradient(to right bottom, #24559f, #0079c2, #0099bb, #00b38a, #16c63c); */
    background-color: rgb(187, 236, 236);

    box-shadow: 0px 0px 10px 2px rgba(119, 119, 119, 0.75);
    -moz-box-shadow: 0px 0px 10px 2px rgba(119, 119, 119, 0.75);
    -webkit-box-shadow: 0px 0px 10px 2px rgba(119, 119, 119, 0.75);

    
}

h3{
    font-size: 1.2em;
    color: black;
    font-family: 'Anton', sans-serif;
    font-weight: lighter;
    letter-spacing: 1px;
    margin-left: 15%;
}


/* formulaire*/

.erreur{
    color: red;
    text-align: center;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9em;
}

.ps_mdp{
    margin-top: 10%;
}

.input-form{
    display: flex;
    flex-direction: column-reverse;
    margin: 1.4em;
    width: 70%;
    margin-left: auto;
    margin-right: auto;
    font-family: 'Montserrat', sans-serif;
}

input{
    background-color: transparent;
}

input, label, button{
    transition: .3s;
}

label{
    transform: translate(10px, -15px);
    cursor: text;
    transform-origin: left top;
    position: absolute;
}

input{
    padding: 10px;
    border: none;
    outline: none;
    border-bottom: 2px solid grey;
}

button{
    border: 0;
    padding: 10px 15px;
    cursor: pointer;
    color: white;
    background-color: #ff9234;
    font-family: 'Montserrat', sans-serif;
    margin-right: 15%;
    
}

button:focus, button:hover{
    background-color: #d92027;
}

.submit-form{
    text-align: right;
}

input::placeholder {
    opacity: 0;
}

input:focus,
input:not(:placeholder-shown) {
    border-bottom: 2px solid red;
}

input:not(:placeholder-shown) ~ label,
input:focus ~ label {
    transform: translate(10px, -30px) scale(.8);
    padding-left: 0;
    color: black;
}


.check_label{

    position: inherit;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9em;
}

#re_co{
    margin-left: 15%;
}