*{
    box-sizing: border-box;
}

.card-title {
    margin-bottom: 0;
}

img{
    width:100%;
    border:1px solid green;
}

.btn{
    font-size: 1.2em;
}
#boton{
    margin-left: 1em;
    margin-top: 0.5em;
}

#boton:hover{
    background-color: green;
    color:white;
}

#icon{
    border: none;   
}

@media (max-width: 576px) { 
    #icon{
        width: 0px;
        height: auto;
    } 
 }