html {
    background-color: #252323; 
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.form {
    background-color: #252323;
    width: 300px;
    padding: 32px;
    border-radius: 10px;
    box-shadow: 0 4px 16px #ccc;
    font-family: sans-serif;
    letter-spacing: 1px;
}

.form_input,
.form_button {
    font-family: sans-serif;
    letter-spacing: 1px;
    font-size: 16px;
}

.form_title {
    text-align: left;
    margin: 0 0 32px 0;
    font-weight: normal;
    color: #fff;
}

.form_group {
    position: relative;
    margin-bottom: 32px;
    color: #fff;
}

.form_label {
    position: relative;
    top: 0;
    z-index: 1;
    color: #00a2ff;
    transition: 0.3s;
}

.form_input {
    width: 100%;
    padding: 0 0 10px 0;
    border: none;
    border-bottom: 1px solid #e0e0e0;
    background-color: transparent;
    outline: none;
    transition: 0.3s;
    color: #fff;
}

.form_input:focus {
    border-bottom: 1px solid #1a73a8;
}

.form_button {
    padding: 10px 20px;
    margin-right: 51px;
    border: none;
    border-radius: 5px;
    color: #fff;
    background-color: #0071f0;
    outline: none;
    cursor: pointer;
    transition: 0.3s;
}

.form_button:focus,
.form_button:hover {
    background-color: rgba(0, 113, 240, 0.7);
}

.form_input:focus ~ .form_label, 
.form_input:not(:placeholder-shown) ~ .form_label {
    top: -18px;
    font-size: 12px;
    color: #252323;
}