*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    line-height: 1.5;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
.bg-change{
    background-color: #ffffff;
    border: transparent;
    color: #000000;
    padding: 0px 20px;
    font-weight: 700;
    /* font-size: 16px; */
    cursor: pointer;
    border-radius: 50%;
}
.header-main{
    background-color: #555555;
    padding: 10px 0;
}
.header{
    display: flex;
    justify-content: space-between;
    /* margin-top: 2rem; */
}
.header img{
    width: 50px;
    border-radius: 50%;
}
.user{
    display: flex;
    gap: 1rem;
}
.user a{
    display: flex;
    flex-wrap: wrap;
    color: #ffffff;
    flex-direction: column;
    text-decoration: none;
}
.main{
  display: grid;
  gap: 1rem;
}

.card{
    background-color: rgb(234, 234, 234);
    padding: 0.7rem 2rem;
    text-align: center;
    width: 100%;
    border: 1px solid black;
    border-radius: 5px; 
}
.btn{
    cursor: pointer;
}

.img{
    width: 100%;
    display: grid;
    gap: 1rem;
}
.img img{
    width: 100%;
}
.container {
    width: 90%;
    margin-left: auto;
    margin-right: auto;
}
.section{
    margin-top: 5rem;
}
.mb{
    margin-bottom: 1rem;
}
.footer-main{
    background-color: #555555;
}
.footer{
    padding: 2rem 0;
    color: #ffffff;
    text-align: center;
}


@media (min-width: 475px){
    .container{
        max-width: 475px;
    }
}

@media (min-width: 640px){
    .container{
        max-width: 640px;
    }
    .main{
        grid-template-columns: auto auto;
    }
    .img{
        grid-template-columns: auto auto;
    }
}

@media (min-width: 768px){
    .container{
        max-width: 768px;
    }
    .main{
        grid-template-columns: auto auto auto;
    } 
    .img{
        grid-template-columns: auto auto auto;
    }
}

@media (min-width: 1024px){
    .container{
        max-width: 1024px;
    }
    .main{
        grid-template-columns: auto auto auto auto;
    }
    .img{
        grid-template-columns: auto auto auto auto;
    }
}

/* 
@media (min-width: 1280px){
    .container{
        max-width: 1280px;
    }
} */

/* @media (min-width: 1536px){
    .container{
        max-width: 1536px;
    }
} */