body {
    width: 100vw !important;
}
.listar-tarefas-professor {
    /* border: solid 1px #ccc; */
    margin: 0 5px 0 5px;
    padding: 0;
    border-radius: 5px;
    /* box-shadow: 2px 2px 2px 1px rgba(0, 0, 0, 0.2);   */
}


.container img#logo {
    margin-top: 25px !important;
    margin-bottom: 20px !important;
}

.file-area {
    width: 100%;
    position: relative;
}

.file-area input[type=file] {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    cursor: pointer;
}

.file-area .file-dummy {
    width: 100%;
    padding: 30px;
    background: #8F8F8F;
    border: 2px dashed #7A7A7A;
    text-align: center;
    transition: background 0.3s ease-in-out;
}

.file-area .file-dummy .success {
    display: none;
    color: #fff;
}

.file-area:hover .file-dummy {
    background: #7A7A7A;
}

.file-area input[type=file]:focus + .file-dummy {
    outline: 2px solid #7A7A7A;
    outline: -webkit-focus-ring-color auto 5px;
}

.file-area input[type=file]:hover + .file-dummy {
    background: #B8B8B8;
    border: 2px dashed #999999;
}

.file-area input[type=file]:valid + .file-dummy {
    border-color: #208337;
    background-color: #28A745;
}

.file-area input[type=file]:valid:hover + .file-dummy {
    border-color: #28A745;
    background-color: #30C553;
}

.file-area input[type=file]:valid + .file-dummy .success {
    display: inline-block;
}

.file-area input[type=file]:valid + .file-dummy .default {
    display: none;
}

.default {
    color: #fff;
}

.form-group .file-area label {
    font-weight: 500;
    display: block;
    margin: 4px 0;
    text-transform: uppercase;
    font-size: 13px;
    overflow: hidden;
}

.form-group .file-area label span {
    float: right;
    text-transform: none;
    font-weight: 300;
    line-height: 1em;
    font-style: italic;
    color: #F8333C;
    opacity: 0.8;
}

@media (max-width: 768px) {
    .container img#logo {
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        padding: 0 !important;
    }
    #buttons {
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
    }
    #buttons a {
        width: 100% !important;
    }
    #titleAlunoTarefa {
        display: flex;
        justify-content: center;
        align-items: center;
    }
    #explainEnviarTarefa {
        display: flex !important;
        justify-content: unset !important;
        flex-direction: column !important;
    }
    #homeAluno {
        flex-direction: column-reverse !important;
    }
    .row .col-lg-12 .form-group .btn.btn-primary#btn {
        width: 100%;
    }
    #form-tarefa {
        width: 100% !important;
    }
    #buttons #alunos-listar-tarefa-buttons {
        width: 100% !important;
    }
    .listar-tarefas-professor .button-aluno.btn.btn-primary.btn-sm {
        width: 100%;
    }
}

@media (max-width: 490px) {
    body {
        margin: 0 !important;
        padding: 0 !important;
    }
    #explainEnviarTarefa {
        padding: 10px !important;
    }
    #instructions {
        margin: 10px !important;
        padding: 10px !important ;
    }
}