body {
    margin: 0;  
    background-color: #ffffff; 
}

p {
    display: block;
    margin-block-start: 1em;
    margin-block-end: 1em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
}
h1{
    display: block;
    font-size: 1.17em;
    margin-block-start: 1em;
    margin-block-end: 1em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
    font-weight: bold;
    unicode-bidi: isolate; 
}
header {
    text-align: center;
    padding: 10px 0;
}


header img {
    width: 100px;
    height: 100px;
    right: 40%;
    position: relative;
}

.container {
    width: 90%;
    height: 100%;
    margin: 0 auto; 
    
}
.pic{
    position: relative;
    display: flex;
    width: 900px;
    left: 20%;
}



footer{
    position: relative;
    top: 368px;
    background-color: #000000;
    color: #ffffff;
    text-align: center;
    padding: 20px 0;  
}


---------------------------------------------
.caja{
    max-width: 100%;
    margin: 10px;
    display: inline-block;
    border-radius: 20px;
    border: 2px double rgb(1, 1, 1);
    
}
.uno{
    padding: 10px; 
      
}
----------------------------------------

nav {
    text-align: left;

}
nav ul {
   
    position: relative;
    list-style-type: none;
    padding: 0;
    width: 500px;  
}
ul{
    position: relative;
    left: 70%;
    bottom: 80px;
}
nav ul li {
    display: inline;
    margin-right: 30px;    
}
a{
    text-decoration: none;
    color: black; 
}
a:hover{
    color: hsl(0, 73%, 50%);
}
main {
   
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    
}