* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Roboto Mono', monospace;
}

*::selection {
    background-color: orange;
    color: white;
}

body{
    color: white;
}
#main {
    height: 93vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    background: #000000;
    background: -webkit-linear-gradient(to left, #434343, #000000);
    background: linear-gradient(to left, #434343, #000000);
}

h1 {
    margin: 50px;
}
h3{
    margin-bottom: 30px;
}

#login-box {
    width: 30%;
    height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #f1f1f1;
    background-color: olive;
    background: #000000;
    background: -webkit-linear-gradient(to left, #434343, #000000);
    background: linear-gradient(to left, #434343, #000000);
    box-shadow: rgba(255, 255, 255, 0.45) 0px 4px 12px;
    border-radius: 5px;
}

input,
button {
    width: 60%;
    height: 40px;
    margin: 8px;
    padding-left: 5px;
    border: 1px solid silver;
    border-radius: 5px;
    outline: none;
    font-size: 16px;
}
button{
    color: white;
    background-color: olive;
    border: transparent;
    font-weight: 700;
    cursor: pointer;
}
.forget-registr-box,
.back-login-page {
    width: 70%;
    height: 20px;
    margin-top: 10px;
    display: flex;
    justify-content: space-between;
}
.forget,
.registr,
.back-login {
    font-size: 12px;
    cursor: pointer;
}

#footer{
    font-size: 12px;
    width: 100%;
    height: 7vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #000000;
    background: -webkit-linear-gradient(to left, #434343, #000000);
    background: linear-gradient(to left, #434343, #000000);
    box-shadow: rgba(255, 255, 255, 0.45) 0px 4px 12px;
}

#register-box {
    width: 30%;
    height: 350px;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #f1f1f1;
    background-color: olive;
    background: #000000;
    background: -webkit-linear-gradient(to left, #434343, #000000);
    background: linear-gradient(to left, #434343, #000000);
    box-shadow: rgba(255, 255, 255, 0.45) 0px 4px 12px;
    border-radius: 5px;
}