Hello,

Your website is working now.

To change the search as you required try adding the following Custom CSS in the Custom CSS for Desktop area under Theme Settings >> Custom CSS.

.searchform .searchsubmit {
    right: auto;
    left: 2px;
}

.searchform input[type=text]::placeholder {
    text-align: center;
    border-bottom: 2px solid;
    padding-bottom: 10px;
}

Best Regards