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

body{

    background: #00d2ff;  /* fallback for old browsers */
    background: -webkit-linear-gradient(to right, #3a7bd5, #00d2ff);  /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(to right, #3a7bd5, #00d2ff); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
    font-size: 1.4em;

}

a{
    color: #0049af;
}

a:hover{
    text-decoration: none;
}

.graph{
    display: none;
}

.exercise{
    font-size: 1.5em;
}

.exponent{
    margin-bottom: 30px;
    width: 40px;
}

.main_exercise{
    background-color: #3a7bd5;
    border-radius: 5px;
    color: white;
    text-align: center;
    padding: 1em;
    width: 40%;
}

.formula{
    background-color: #3a7bd5;
    border-radius: 5px;
    color: white;
    font-size: 2em;
    text-align: center;
    padding: 0.5em;
    width: 30%;
}

.img_formula{
    border-radius: 5px;
    width: 120px;
}

.subtitle{
    color: #0061e9;
}

.jumbotron{
    background-image: url('../assets/chile.jpg');
    background-size: cover;
    color: white;
    padding-top: 8em;
    text-shadow: 2px 2px 2px black;
}

.card-img-top{
    height: 20em;
    width: 100%;
}

.button{
    border: 2px solid white;
    text-shadow: none;
}

.todayData{
    background-color: #3a7bd5;
    border-radius: 5px;
    color: white;
    float: left;
    padding: 1em;
    width: 100%;
}

.list:hover{
    background-color: #5b9fff;
    border-radius: 5px;
    color: white;
    cursor: pointer;
}

.section{
    background-color: #ffffffea;
    border-radius: 5px;
    box-shadow: 3px 3px 3px rgba(0, 0, 0, 0.5);
    padding: 1.5em;
    padding-top: 5em;
    width: 100%;
}

.section_title{
    font-size: 2em;
}

.section_subtitle{
    background-color: #0045a7;
    border-radius: 10px 0 10px;
    color: white;
    font-size: 1.2em;
    padding: 1em;
    text-align: center;
    text-indent: 1em;
}

.section_autor{
    border-bottom: 2px solid gray;
    font-size: 14px;
    padding-bottom: 0.2em;
}

.section_paragraph{
    margin-top: 2em;
    text-align: justify;
}

.section_item{
    background-color: #5b9fff69;
    border-left: 5px solid #3a7bd5;
    font-weight: bold;
    margin-top: 2em;
    margin-bottom: 2em;
    padding: 1em;
}

.section_img {
    box-shadow: 3px 3px 3px rgba(0, 0, 0, 0.5);
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-top: 1em;
    margin-bottom: 1em;
    width: 20em;
}

.indent{
    text-indent: 2em;
}

.text_index{
    color: white;
}

.index{
    margin-top: 2em;
}

.index a{
    border: 1px solid white;
    color: white;
    display: block;
    text-decoration: none;
    background-image: linear-gradient(#3a7bd565, rgba(0,0,0,0));
    border-radius: 5px;
    list-style-type: none;
    padding: 0.5em;
    margin-bottom: 1em;
}

.index a:hover{
    background-image: linear-gradient(rgba(255,255,255,0.2), rgba(0,0,0,0));    
}

.static{
    display: none;
    position: fixed;
    right: 0;
    top: 3em;
    height: 60vw;
}

.navigation{
    border-bottom: 1px solid white;
    box-shadow: 3px 3px 3px rgba(0, 0, 0, 0.5);
    position: fixed;
    width: 100%;
    z-index: 200;
}

.showIndex{
    bottom: 0;
    display: block;
    font-size: 1.2em;
    left: 0;
    position: fixed;
    width: 30%;
}

.source{
    background-color: #3a7bd565;
    border-radius: 5px;
    margin-bottom: 1em;
    padding: 0.5em;
    text-align: center;
}

.itemList{
    margin-top: 1em;
    margin-bottom: 1em;
}

.itemList li{
    list-style-type: none;
    text-align: justify;
    margin: 1em;
}

.itemColor{
    color: #0045a7;
}

.formul{
    width: 80%;
}

.buttonSquare{
    background-color: #1061d1;
    border-radius: 6px;
    border: 3px solid white;
    box-shadow: 3px 3px 3px rgba(0, 0, 0, 0.452);
    color: white;
    display: block;
    margin: 1em;
    padding: 1em;
    width: 80vh;
}

.buttonSquare:hover{
    background-color: #0244a0;
    color: white;
}

.line{
    border-top: 1px solid black;
    padding-top: 2px;
}

.grafico{
    background-color: #89baff;
    border-radius: 5px;
    box-shadow: 2px 2px 2px 2px rgba(0, 0, 0, 0.5);
    font-weight: bold;
    margin-bottom: 1em;
    margin-top: 1em;
    padding: 0.5em;
}

.table{
    width: 100%;
}

.grafico p{
    text-align: center;
    margin-top: 0.5em;
}

.grafico img{
    width: 100%;
}

.small_title{
    border-bottom: 1px solid rgba(0, 0, 0, 0.2);
    font-size: 1em;
    font-weight: bold;
    margin-top: 1.5em;
}

.blackboard{
    height: 90%;
    width: 100%;
}

.functionality{
    background-image: linear-gradient(#3a7bd565, #6ba8ff);
    border-radius: 10px;
    margin-bottom: 1em;
    position: relative;
    width: 90%;
}

.formulario input, .formulario label, .formulario p{
    text-align: center;
    width: 100%;
}

.center{
    display: block;
    left: 0;
    right: 0;
    margin-left: auto;
    margin-right: auto;
}

#result{
    background-color: #133361;
    border-radius: 5px;
    color: white;
    display: none;
    margin: 1em;
    padding: 0.2em;
    text-align: center;
}

#message{
    font-size: 0.8em;
    margin: 1em;
    text-align: center;
}

#error{
    font-size: 0.8em;
    display: none;
    margin-top: 1em;
}

#n1,
#n2,
#n3{
    display: none;
}

.card-text{
    font-size: 0.8em;
    text-align: justify;
}

.card-title{
    text-align: center;
}

.boton{
    font-size: 0.9em;
    width: 100%;
}

.nav-link{
    line-height: 22px;
}

.frame{
    height: 40vw;
    width: 100%;
}

@media (min-width: 990px) {

    .nav-item {
      width: 100%;
    }

  }

@media (max-width: 850px) {

    .buttonSquare{
        width: 80%;
    }

}


@media (max-width: 990px) {

    .formula, .main_exercise {
        width: 100%;
    }

    .static{
        display: none;
        width: 100%;
    }
}