* {
    margin: 0;
    padding: 0;
}

body {
    background-image: linear-gradient(to right, #c299ff, #ff6347);
    background-color: #ff6347;
    background-repeat: repeat-y;
    color: #FFF;
}

.return-nav {
    min-height: 25px;
    margin: 20px; 
}

.return-nav a {
    color: #FFF;
}

.material-icons:hover {
    background-color: #ff6347;
    border-radius: 50%;
}

.index-main-container {
    height: 100vh;
    display: flex;
    flex-flow: row wrap;
    justify-content: center;
    align-items: center;
}

.index-sections-container {
    width: 500px;
    height: 400px;
    margin: 1px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.3); 
}

.index-txt-container {
    flex-direction: column; 
}

.index-txt-container h1 {
    font-size: 3.9em;
    font-family:'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
    text-shadow: 1px 2px rgba(0, 0, 0, 0.3);
}

.index-txt-container p {
    padding: 7px;
    margin-top: 10px;
}

.index-txt-container a {
    color: #FFF;
}

.index-menu-container nav {
    display: flex;
    flex-direction: column;
}

.link-exercicio {
    background-color: rgba(0, 0, 0, 0.3);
    color: white;
    padding: 8px;
    margin: 2px;
    width: 400px;
    height: 20px;
    text-decoration: none;
}

.link-exercicio:hover,
.link-exercicio.active {
    background-color: #ff6347;
    color: #FFF;
}

.container-titulo-exercicio {
    min-height: 70vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin: auto;
    align-items: center;
}

.exercicio-container {
    width: 500px;
    background-color: rgba(0, 0, 0, 0.3);
    padding: 15px;
    margin-bottom: 15px;
}

.titulo-exercicio {
    font-family:'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
    font-size: 3em;
    text-shadow: 1px 2px rgba(0, 0, 0, 0.3);
    margin-bottom: 15px;
    text-align: center;
}

.hora-do-dia-container {
    text-align: center;
}  

.hora-do-dia-container img {
    margin-top: 20px;
}

.forms-colunm {
    display: flex;
    flex-direction: column;
}

.forms-colunm-item {
    display: flex;
    flex-direction: row;
    align-items: center;
    margin-bottom: 2px;
}

.forms-colunm-item label {
    width: 12%;
}

input[type=number] {
    padding: 5px;
    margin: 2px 0px 2px 0px;
    border: none;
    border-radius: 0%;
    font-size: 14px;
}

input[type=number]:focus {
    outline: none;
}

.result-box {
    width: 170px;
    height: 163px;
    display: table;
    color: #000;
    background-color: #fff;
    font-size: 0.8em;
    padding: 5px;
}

/* CLASSE UTILITÁRIA */

.primary-txt {
    font: normal 1em arial;
    color: #fff;    
}

.primary-btn {
    width:fit-content;
    background-color: rgba(0, 0, 0, 0.3);
    color: white;
    margin: 2px 0px 2px 0px;
    padding: 5px;
    font-size: 14px;
    border: none;
    cursor: pointer;
}

.primary-btn:hover,
.primary-btn.active {
    background-color: #ff6347;
    color: #FFF;
}

.margin-10px {
    margin: 10px 0px 10px 0px;
}

.reset-forms {
    visibility: hidden;
}


@media only screen and (max-width: 600px) {
    body {
        overflow-x: hidden;
    }

    .exercicio-container {
    width: 300px;
    }

    .forms-colunm-item label {
        width: 19%;
    }

    input[type=number] {
        width: 170px;
        margin-right: 2px;
    }

    .input-button-row {
        display: flex;
        flex-direction: row;
    }
}