* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
<style>
@import url('https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap');
</style>
body {
    font-family: 'Montserrat', sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    background-color:#f2e9ea;
}

img {
    max-width: 100%;
    height: auto;
}
a {
    display: block;
    font-size: 16px;
    font-weight: 400;
    text-decoration: none;
}
a:hover {
    color: #ec5564;
    font-size: 16px;
    font-weight: 400;
    text-decoration: none;
}

h1 {
    font-family: 'Montserrat', sans-serif;
    color: #151356;
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 0;
}

h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 0;
}

h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 18px;
    font-weight: 700;
    color: #151356;
    margin-top: 1.5em;
    margin-bottom: 1em;
    padding-bottom: 0.5em;
    border-bottom: 1.5px solid #ec5564;
}

h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    font-weight: 400;
    text-transform: none;
    color: white;
}

ul {
  list-style-type: none;
    padding: 0;
}
/* header y nav */
#logo-header {
    width: 4em;
    display: block;
}

header {
    background-color: #ec5564;
    padding: .6em;
    padding-left: 6%;
    padding-right: 6%;
    height: 3em;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 10px rgba(0,0,0,0.3);
    z-index: 99;
}

header nav ul {
    display: flex;
    justify-content: flex-end;
    list-style: none;
}

header nav ul li a {
    font-family: 'Montserrat', sans-serif;
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    color: white;
    margin-left: 1.5em;
}

header nav ul li a:hover {
    
    border-bottom: 1.5px solid #fff;
    font-size: 13px;
    font-weight: 600;
    color: white;
    margin-left: 1.5em;
}
main {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

/* perfil */
.nosotros {
    padding: 0;
    text-align: center;
    margin-top: 6%;
    margin-bottom: 0%;
    
}
.nosotros li {
    display: inline-block;
    width: 190px;
   
}
.nosotros li img {
    width: 150px;
    border-radius: 100%;
    
}
.nosotros li img {
    width: 150px;
    border-radius: 100%;
    }
    
.perfil {
    background-image:url("images/fondo.jpg");
    background-size: cover;
    background-position: center;
   
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
    height: 54vh;
    padding: 6%;
}

.perfil p {
    font-family: 'Montserrat', sans-serif;
    font-size: 12px;
    color: #151356;
    font-weight: 700;
    margin-bottom: 20px;
}

.perfil h2 {
    font-family: 'Montserrat', sans-serif;
    color: #151356;
}

.perfil h4 {
    font-family: 'Montserrat', sans-serif;
    color: #151356;
    margin-bottom: 1em;
}

.perfil li {
   list-style: none;
    
}
.perfil li img{
   width: 150px;
    border-radius: 100%;
    
    
}

/* bloque con numeros de materias */
.materias {
    background-color: white;
    border-radius: 1.5em;
    box-shadow: 0 .3em 1em rgba(0,0,0,.2);
    margin: -1.2em 6% 0 6%;
    
    margin-bottom: 6%;
}

.materias ul {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    list-style: none;
    padding: 6% 8%;
}

.materias ul li h2 {
    font-family: 'Montserrat', sans-serif;
    color: #ec5564;
    text-align: center;
}

.materias ul li {
    font-family: 'Montserrat', sans-serif;
    flex-grow: 1;
    color: rgb(140,140,160);
    font-size: 12px;
    text-align: center;
    font-weight: 900;
}

/* contenido */
.contenido {
    padding: 2% 6% 8% 6%;
    text-align: center;
}

.separador {
    margin: 1em 0em;
    
    height: 1px;
    
    border-bottom: 1.5px solid #ec5564;
}

.contenido p {
    font-family: 'Montserrat', sans-serif;
    font-size: 16px;
    font-weight: 500;
    color: #151356;
    margin-bottom: 1em;
    line-height: 1.4em;
}

.contenido a {
    font-family: 'Montserrat', sans-serif;
    text-decoration: none;
    color: #ec5564;
    font-size: 14px;
    font-weight: 500;

}
.contenido a:hover {
    text-decoration: underline;
    color: #ec5564;
    font-size: 14px;
    font-weight: 500;

}
/* boton */
.boton{
    margin-top: 35px;
    }

.boton li a {
    display: inline-block;
    font-family: 'Montserrat', sans-serif;
    background-color: #ec5564;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    color: #fff;
    padding-left: 30px;
    padding-right: 30px;
    padding-top: 10px;
    padding-bottom: 10px;
    
}

.boton li a:hover{
    background-color:#151356;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    color: #fff;
    padding-left: 30px;
    padding-right: 30px;
    padding-top: 10px;
    padding-bottom: 10px;
    
}

.boton li img {
    width: 500px;
    padding-bottom: 20px;
}

/* ------ integrantes JT26 ------ */
.integrantes {
    margin-top: 2em;
}

.integrantes h3{
    margin-bottom: 1em;
}

.integrantes ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    margin-top: 1em;
}

.integrantes ul li {
    background-color: white;
    padding: 1em 1.5em;
    border-radius: 1.5em;
    margin-bottom: .5em;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 .2em .6em rgba(0,0,0,.2);
}

.integrantes ul li a {
    flex-grow: 1;
    font-size: 16px;
    line-height: 1.3em;
    color: #151356;
}

.integrantes ul li a:hover {
    text-decoration: none;
    flex-grow: 1;
    font-size: 16px;
    line-height: 1.3em;
    color: #ec5564;
}

.integrantes ul li img {
    width: 1em;
    height: 1em;
}

.informacion { 
    text-align: center;
    
    display: flex;
    align-items: center;
    margin-top: 70px;
    padding: 0;
}
.informacion ul li {
    list-style: none;
    display: flex;
    display: inline-block;
    margin-top: 10px;
}

.uba {
    width: 150px;
    float: left;
}
.fadu {
    width: 150px;
    float: left;
}
.dgpc {
    width: 80px;
    float: left;
}
.uno {
    font-size: 10px;
    text-align: center;
    text-align: left;
    width: 100%;
    padding-right:

}
.dos {
    font-size: 10px;
    text-align: center;
    width: 72%;
    margin-left: 90px;
}
.tres {
    font-size: 10px;
    text-align: center;
    width: 90%;
    margin-left: 10px;
}

/* footer */
footer {
    padding: 6%;
    background-color: #ec5564;
}

footer p {
    font-family: 'Montserrat', sans-serif;
    text-align: center;
    color: #fff;
    font-size: 12px;
    line-height: 1.5em;
}