body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.footer-container {
    width: 80%;
    margin: auto;
    overflow: hidden;
}

header {
    background: #333;
    color: #fff;
    padding: 10px 0;
}

header nav ul {
    list-style: none;
    padding: 0;
}

header nav ul li {
    display: inline;
    margin: 0 15px;
}

header nav ul li a {
    color: #fff;
    text-decoration: none;
}

footer {
    text-align: center;
    padding: 10px 0;
    background: #333;
    color: #fff;
    position: relative;
    bottom: 0;
    width: 100%;
}

ul {
    list-style: none;
}

#historia_lista li {
    margin-top: 10px;
}

.funcionalidades_img {
    width: 100%;
    height: 80%;
}

.triangulo {
    position: relative;
    width: 300px;
    height: 173px;
    margin-left: 20%;
    margin-bottom: 10px;
}

.triangulo::before {
    content: "";
    position: absolute;
    top: -1px;
    left: -2px;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 0 152px 175px 152px;
    border-color: transparent transparent #000 transparent;
    z-index: 1;
}

.triangulo::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 0 150px 173px 150px;
    border-color: transparent transparent #f4f4f4 transparent;
    z-index: 2;
}
    

.educacao {
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 15px;
    font-weight: bold;
}
    
.tecnologia {
    position: absolute;
    right: 0;
    bottom: -30px;
    font-size: 15px;
    font-weight: bold;
    transform: translateX(50%);   
}
    
.inovacao {
    position: absolute;
    left: 10px;
    bottom: -30px;
    font-size: 15px;
    font-weight: bold;
    transform: translateX(-50%);    
}