*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    background-color: #f0f0f0;
    font-family: Arial, sans-serif;
}

#com_logo{
    width: 80%;
    height: auto;
    margin-left: 10%;
    border-radius: 10px;
}

#div_background{
    background-size: cover;
    background-position: center;
    width: 100%;
    height: 100vh;
    opacity: 0.8;
    position: absolute;
    z-index: -1;
    background: linear-gradient(60deg,rgba(255, 250, 250, 1) 0%, rgba(80, 107, 242, 1) 68%, rgba(17, 44, 245, 1) 100%);
}

#div_login{
    margin: auto;
    position: absolute;
    top: 10%;
    left: 30%;
    width: 40%;
    border: 3px solid #333;
    border-radius: 10px;
    padding: 20px;
    background-color: white;
}

.link_title{
    text-decoration: none;
}

#h1_title{
    text-align: center;
    color: #333;
    font-size: 2.5em;
    margin-top: 0px;
    margin-bottom: 10px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    border-radius: 10px;
    padding: 10px;
    color: dodgerblue;
}

/* input */
.txt_input{
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1em;
}

.div_input{
    margin: 10px 0;
}

#btn_login{
    width: 100%;
    padding: 10px;
    margin: 20px 0;
    background-color: dodgerblue;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1.2em;
}

@media (max-width: 768px) {
    #div_login {
        width: 90%;
        left: 5%;
        top: 20%;
    }

    #h1_title {
        font-size: 2em;
    }

    .txt_input, #btn_login {
        font-size: 1em;
    }
}